Preparation and performance of lignin–phenol–formaldehyde adhesives
Source abstract
Abstract
Abstract Steam explosion lignin phenol formaldehyde (SEL–PF) adhesives were prepared by ternary gradual copolymerization. The parameters for the phenolate of steam explosion lignin (SEL) and preparation of SEL–PF adhesives were optimized. Under the optimum phenolate conditions, the phenolic hydroxyl content of lignin increased by 130%, whilst the methoxyl content was reduced by 68%. The SEL–PF adhesives were used to prepare plywoods by hot-pressing. The pH value, viscosity, solid content, free phenol content and free formaldehyde content of SEL–PF adhesives were investigated. The bonding strengths of the plywoods glued with SEL–PF adhesives were determined. The maximum SEL replacement percentage of phenol reached 70 wt%, and the properties of adhesives and plywoods met the Chinese National Standard (GB/T 14732-2006) for first grade plywood.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Lignin and Wood Chemistry · Biochemical and biochemical processes · Enzyme-mediated dye degradation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (23)
Show source-provided references
1. Use of organosolv lignin in phenol–formaldehyde resins for particleboard production: I. Organosolv lignin modified resins10.1016/S0143-7496(02)00058-1 ↗
2. Wood and wood products
3. Preparation and characterization of phenol–formaldehyde adhesives modified with enzymatic hydrolysis lignin10.1016/j.biortech.2009.09.085 ↗
4. Use of organosolv lignin in phenol–formaldehyde resins for particleboard production: II. Particleboard production and properties10.1016/S0143-7496(02)00059-3 ↗
5. Development and characterization of a wood adhesive using bagasse lignin10.1016/j.ijadhadh.2004.01.003 ↗
6. Eucalyptus bark lignin substituted phenol formaldehyde adhesives: a study on optimization of reaction parameters and characterization10.1002/app.20374 ↗
7. Development and characterization of a lignin–phenol–formaldehyde wood adhesive using coffee bean shell10.1163/1568561054352577 ↗
8. Development and characterization of groundnut shell lignin modified phenol formaldehyde wood adhesive
9. Lignin–Phenol–Formaldehyde resins as adhesives in the production of plywood10.1007/BF02615352 ↗
10. Modification of phenol–formaldehyde resol resins by lignin, starch, urea10.1002/app.11776 ↗
11. Physico-chemical characterization of lignins from different sources for use in phenol–formaldehyde resin synthesis10.1016/j.biortech.2006.05.042 ↗
12. Finnish plywood, particleboard, and fiberboard made with a lignin-base adhesive
13. Falkehag SI, Marton J, Adler E. Chromophores in kraft lignin. Advances in chemistry. London: World Scientific Publishing Co. Inc; 1966. p. 75. [chapter 7]10.1021/ba-1966-0059.ch007 ↗
14. Effect of chemical modification of lignin on the gluebond performance of lignin–phenolic resins10.1016/S0960-8524(97)00030-8 ↗
15. Acetosolv pine lignin as copolymer in resins for manufacture of exterior grade plywoods10.1016/S0960-8524(99)00020-6 ↗
16. Hydroxymethylation and oxidation of organosolv lignin and utilization of the products10.1016/S0960-8524(01)00056-6 ↗
17. Use of a methylolated softwood ammonium lignosulfonate as partial substitute of phenol in resol resins manufacture10.1002/app.20887 ↗
18. Kraft lignin utilization in adhesives10.1007/BF00355851 ↗
19. Properties of phenol–formaldehyde resins prepared from phenol-liquefied lignin10.1002/app.35539 ↗
20. An approach to improve the application of acid-insoluble lignin from rice hull in phenol–formaldehyde resin10.1016/j.colsurfa.2011.01.006 ↗
21. Modification of ammonium lignosulfonate by phenolation for use in phenolic resins10.1016/j.biortech.2004.09.009 ↗
22. Estimation of total phenolic content and other oxidation substrates in plant tissues using Folin–Ciocalteu reagent10.1038/nprot.2007.102 ↗
23. Chen CL. Determination of methoxyl groups. Methods in lignin chemistry. Berlin, Heidelberg: Springer; 1992. p. 465.10.1007/978-3-642-74065-7_32 ↗